html {
  font-size: 12px;
  min-width: 35rem;
}
.top_nav {
  position: fixed;
  width: 100%;
  top: 0;
  left: 0;
  z-index: 999;
}
.top_nav .top_nav_container {
  height: 3.75rem;
  min-width: 27.08333rem;
  background-color: #fff;
  font-size: 1.25rem;
  line-height: 3.75rem;
  border-bottom: 1px solid #ddd;
}
.top_nav .top_nav_container .container_ul {
  margin: 0 auto;
  max-width: 50rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  position: relative;
}
.top_nav .top_nav_container .container_ul .logo {
  padding: 0 1.66667rem;
}
.top_nav .top_nav_container .container_ul .logo .logo_img {
  width: 2.16667rem;
  height: 2.16667rem;
  margin-right: 0.66667rem;
  background-image: url(../images/logo.png);
  background-size: cover;
  background-position: 50%;
}
.top_nav .top_nav_container .container_ul .nav .nav_ul {
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.top_nav .top_nav_container .container_ul .nav .nav_ul li {
  margin: 0 0.66667rem;
  color: #90959b;
}
.top_nav .top_nav_container .container_ul .zhanwei {
  flex: 1;
}
.top_nav .top_nav_container .container_ul .dowload {
  background: #fb7299;
  border-radius: 1.25rem;
  font-size: 1.08333rem;
  color: #fff;
  padding: 0 1.33333rem;
  height: 2.5rem;
  line-height: 2.5rem;
}
.content {
  padding-top: 3.75rem;
}
